80172325 has 6 divisors (see below), whose sum is σ = 99413714. Its totient is φ = 64137840.

The previous prime is 80172317. The next prime is 80172329. The reversal of 80172325 is 52327108.

It can be written as a sum of positive squares in 3 ways, for example, as 641601 + 79530724 = 801^2 + 8918^2 .

It is not a de Polignac number, because 80172325 - 2³ = 80172317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80172293 and 80172302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80172329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1603422 + ... + 1603471.

Almost surely, 2^80172325 is an apocalyptic number.

It is an amenable number.

80172325 is a deficient number, since it is larger than the sum of its proper divisors (19241389).

80172325 is a wasteful number, since it uses less digits than its factorization.

80172325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206903 (or 3206898 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 80172325 is about 8953.8999882733. The cubic root of 80172325 is about 431.1961019247.

The spelling of 80172325 in words is "eighty million, one hundred seventy-two thousand, three hundred twenty-five".